Seat mechanism



1.1 is a bottom perspective view of a seat mechanism, showing my newdesign;

1.2 is a top perspective view thereof;

1.3 is a left view thereof;

1.4 is a right view thereof;

1.5 is a front view thereof;

1.6 is a rear view thereof;

1.7 is a top view thereof; and

1.8 is a bottom view thereof.

The broken lines show portions of the seat mechanism that form no partof the claimed design.

CLAIM The ornamental design for a seat mechanism, as shown anddescribed.